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Millimeter-Wave Modulated-Signal and Error-Vector-Magnitude Measurement With Uncertainty



Catherine A. Remley, Dylan F. Williams, Paul D. Hale, Chih-Ming Wang, Jeffrey A. Jargon, Youngcheol Park


We provide techniques to generate and characterize precision wideband millimeter-wave modulated signals. We use predistortion to obtain a significant improvement in signal quality and an associated reduction in the error vector magnitude (EVM) of the signals generated by an arbitrary-waveform-generator-based source. We adapt a recently developed microwave uncertainty framework to the problem and use it to estimate the uncertainties in the modulated-signal measurements. Models of uncertainties related to all calibration and measurement procedures within the traceability path are included in a sensitivity analysis and Monte Carlo simulations that maintain correlations between time-and frequency-domain errors. We demonstrate EVM values of approximately 1.6% +/- 0.5% for a 1-GSymbol/s 64-state quadrature-amplitude-modulated signal at 44 GHz.
IEEE Transactions on Microwave Theory and Techniques


Digitally modulated signal, error vector magnitude (EVM), measurement uncertainty, microwave measurement, millimeter-wave wireless communications, oscilloscope, wireless system


Remley, C. , Williams, D. , Hale, P. , Wang, C. , Jargon, J. and Park, Y. (2015), Millimeter-Wave Modulated-Signal and Error-Vector-Magnitude Measurement With Uncertainty, IEEE Transactions on Microwave Theory and Techniques, [online], (Accessed June 22, 2024)


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Created May 1, 2015, Updated January 27, 2020